Bolt and nut lock.



L. J. KLEIN. BOLT AND NUT LOOK. APPLIOA'I'ION FILED AUG. 11, 1914.

Patented Dec. 15. 1914.

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LOUIS J. KLEIN, OF NEVJTOWN, MISSOURI.

BOLT AND NUT LOCK.

Specification of Letters'Patent.

Patented Dec. 15, 1914.

Application filed August 11, 1914. Serial No. 856,170.

To all whom it may concern Be it known that I, LOUIS J. KLEIN, a citizen of the United States, residing at Newtown, in the county of Sullivan and State of Missouri, have invented certain new and useful Improvements in Bolt and Nut Locks, of which the following is a specification.

My invention relates to improvements in bolt and nut locks, and has particular reference to apparatus of this character embodying a spring washer surrounding the bolt inwardly of the nut and coupled with the nut to be held in an inclined position with relation thereto, whereby the same will yieldingly engage with the work, thus holding the nut against accidental rotation, but allowing the same to be unscrewed by the proper means, when desired.

An important ob 'ect of the invention is to provide means of the above mentioned character, which are simple in construction, inexpensive to manufacture, convenient in use, strong and durable.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same, Figure 1 is a perspective view of a nut and bolt lock embodying my invention, Fig. 2 is a fragmentary side elevation of the same, placed in operation, and, Fig. 3 is a similar view, parts being shown in section, the nut being screwed up to place the spring washer under tension.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a bolt of any well known or preferred type. This bolt is provided with the usual head 6 and opposite screw-threaded portion 7. Having screw-threaded engagement with the portion 7 is a nut 8, which may be square in cross-section, polygonal or other than round. This nut, as more clearly shown in Fig. 3, is provided with the usual axial screw-threaded opening 9.

The numeral 10 designates a spring washer, which is interposed between the nut 8 and the work 11, as more clearly shown in Figs. 2 and 3. This spring washer is provided approximately centrally thereof with,

a relatively large opening 12,. receiving the screw-threaded portion 7, but having no screw-threaded engagement therewith, the opening 12 having a substantially greater diameter than the screw-threaded portion 7, whereby the spring washer 10 may be laterally swung with relation to the screwthreaded portion. Connectcd'with one end of the spring washer 10 and formed integral therewith is a connecting strip 13, adapted to enter a groove 14k formed upon one side of the nut S. The spring washer 10 is arranged at an angle or is horizontally inclined with respect to the strip 13, before being placed under tension, as clearly shown in Fig. 2. Connected and preferably formed integral with the upper end of the strip 13 is a cap 15, permanently arranged at substantially a right angle thereto, as shown. The cap 15 is provided with a screw-threaded opening 16, in registration with the screw-threaded opening 9, to receive the screw-threaded portion 7 of the bolt. In the manufacture of the spring 1 washer, all parts thereof, to wit, elements 10, 13, and .15, may be advantageously stamped from a section of suitably stiff spring sheet metal, the parts being subsequently bent upon the opposite ends of the strips 13, to

assume the desiredv position.

In the use of the apparatus, the spring washer 10, strip 13, and cap 15 are arranged upon the nut, the groove let receiving the strip 13, thereby serving to retain these parts together. The nut 8 may be secured upon the bolt in the screw-threaded portion 7 passing through the opening 16 in the cap 15, whereby this cap is positively locked in engagement with the top of the nut S and retained parallel thereto. As a result of this the spring washer 10 is normally retained at an angle to the nut S, the same being inclined downwardly away from the same, as best illustrated in Fig. 2. Upon further screwing up the nut, it is obvious that the spring washer 10 will be compressed until it lies flat or parallel with the nut, the same however exerting a continuous yielding pressure upon the work 11, thereby holding the nut against accidental rotation, but allowing the same to be unscrewed by suitable means.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that various changes in the shape,

usual manner, the.

size, and arrangement of parts may be re- 7 provided With angle with relation to the strip, and a cap,

carried by the opposite end of the strip to be arranged upon the top of the nut and a screw-threaded opening to receive and engage the screw-threaded portion of the boltrwhereby the cap is held against the top of the nut in parallel relation thereto.

2. The combination with a bolt and nut, of connected spaced cap and spring Washer tobe arranged upon the opposite ends of the nut respectively, the spring Washer being normally disposed at an angle With rethe bolt of substantially greater diameter carried by the strip and than the bolt and I at an angle With relanormally disposed tion to the cap.

In testimonv whereof I afiiX in presence of two Witnesses. v

LOUIS J. KLEIN.

my signature Witnesses:

E. S. PIGG, LOGAN SHU'EY.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents;

' Washington, D. C. 

